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authorChris Metcalf <cmetcalf@tilera.com>2011-05-03 00:21:12 +0400
committerChris Metcalf <cmetcalf@tilera.com>2011-05-04 22:41:13 +0400
commit5386e735897afd8bcd332caf21a5f68d9e0e81c6 (patch)
tree4149431c393c4aa5631d20790cdb238e718d5347 /arch/tile
parent28d717411badb78df71ecf087a07b93caf418f59 (diff)
downloadlinux-5386e735897afd8bcd332caf21a5f68d9e0e81c6.tar.xz
arch/tile: kernel-related cleanups from removing static page size
User space code has been able to discover the static page size by including a special <hv/pagesize.h> file. In the current release, that file is now gone, and <asm/page.h> doesn't rely on it. The getpagesize() API is now the only way for userspace to get the page size. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile')
-rw-r--r--arch/tile/include/arch/icache.h11
-rw-r--r--arch/tile/include/asm/page.h10
-rw-r--r--arch/tile/include/hv/hypervisor.h12
-rw-r--r--arch/tile/include/hv/pagesize.h32
4 files changed, 17 insertions, 48 deletions
diff --git a/arch/tile/include/arch/icache.h b/arch/tile/include/arch/icache.h
index 5c87c9016338..762eafa8a11e 100644
--- a/arch/tile/include/arch/icache.h
+++ b/arch/tile/include/arch/icache.h
@@ -16,7 +16,7 @@
/**
* @file
*
- * Support for invalidating bytes in the instruction
+ * Support for invalidating bytes in the instruction cache.
*/
#ifndef __ARCH_ICACHE_H__
@@ -30,11 +30,10 @@
*
* @param addr The start of memory to be invalidated.
* @param size The number of bytes to be invalidated.
- * @param page_size The system's page size, typically the PAGE_SIZE constant
- * in sys/page.h. This value must be a power of two no larger
- * than the page containing the code to be invalidated. If the value
- * is smaller than the actual page size, this function will still
- * work, but may run slower than necessary.
+ * @param page_size The system's page size, e.g. getpagesize() in userspace.
+ * This value must be a power of two no larger than the page containing
+ * the code to be invalidated. If the value is smaller than the actual page
+ * size, this function will still work, but may run slower than necessary.
*/
static __inline void
invalidate_icache(const void* addr, unsigned long size,
diff --git a/arch/tile/include/asm/page.h b/arch/tile/include/asm/page.h
index 7105629afa1d..db93518fac03 100644
--- a/arch/tile/include/asm/page.h
+++ b/arch/tile/include/asm/page.h
@@ -16,7 +16,8 @@
#define _ASM_TILE_PAGE_H
#include <linux/const.h>
-#include <hv/pagesize.h>
+#include <hv/hypervisor.h>
+#include <arch/chip.h>
/* PAGE_SHIFT and HPAGE_SHIFT determine the page sizes. */
#define PAGE_SHIFT HV_LOG2_PAGE_SIZE_SMALL
@@ -28,8 +29,6 @@
#define PAGE_MASK (~(PAGE_SIZE - 1))
#define HPAGE_MASK (~(HPAGE_SIZE - 1))
-#ifdef __KERNEL__
-
/*
* If the Kconfig doesn't specify, set a maximum zone order that
* is enough so that we can create huge pages from small pages given
@@ -39,9 +38,6 @@
#define CONFIG_FORCE_MAX_ZONEORDER (HPAGE_SHIFT - PAGE_SHIFT + 1)
#endif
-#include <hv/hypervisor.h>
-#include <arch/chip.h>
-
#ifndef __ASSEMBLY__
#include <linux/types.h>
@@ -337,6 +333,4 @@ extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
#include <asm-generic/memory_model.h>
-#endif /* __KERNEL__ */
-
#endif /* _ASM_TILE_PAGE_H */
diff --git a/arch/tile/include/hv/hypervisor.h b/arch/tile/include/hv/hypervisor.h
index ee41bca4c8c4..72ec1e972f15 100644
--- a/arch/tile/include/hv/hypervisor.h
+++ b/arch/tile/include/hv/hypervisor.h
@@ -22,8 +22,6 @@
#include <arch/chip.h>
-#include <hv/pagesize.h>
-
/* Linux builds want unsigned long constants, but assembler wants numbers */
#ifdef __ASSEMBLER__
/** One, for assembler */
@@ -44,11 +42,21 @@
*/
#define HV_L1_SPAN (__HV_SIZE_ONE << HV_LOG2_L1_SPAN)
+/** The log2 of the size of small pages, in bytes. This value should
+ * be verified at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_SMALL).
+ */
+#define HV_LOG2_PAGE_SIZE_SMALL 16
+
/** The size of small pages, in bytes. This value should be verified
* at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_SMALL).
*/
#define HV_PAGE_SIZE_SMALL (__HV_SIZE_ONE << HV_LOG2_PAGE_SIZE_SMALL)
+/** The log2 of the size of large pages, in bytes. This value should be
+ * verified at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_LARGE).
+ */
+#define HV_LOG2_PAGE_SIZE_LARGE 24
+
/** The size of large pages, in bytes. This value should be verified
* at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_LARGE).
*/
diff --git a/arch/tile/include/hv/pagesize.h b/arch/tile/include/hv/pagesize.h
deleted file mode 100644
index 58bed114fedd..000000000000
--- a/arch/tile/include/hv/pagesize.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, version 2.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for
- * more details.
- */
-
-/**
- * @file pagesize.h
- */
-
-#ifndef _HV_PAGESIZE_H
-#define _HV_PAGESIZE_H
-
-/** The log2 of the size of small pages, in bytes. This value should
- * be verified at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_SMALL).
- */
-#define HV_LOG2_PAGE_SIZE_SMALL 16
-
-/** The log2 of the size of large pages, in bytes. This value should be
- * verified at runtime by calling hv_sysconf(HV_SYSCONF_PAGE_SIZE_LARGE).
- */
-#define HV_LOG2_PAGE_SIZE_LARGE 24
-
-#endif /* _HV_PAGESIZE_H */